Ivan is best remembered for his reign of terror, the book pays due attention to the horrors of his executions, tortures and repressions, especially in the period of the oprichnina (1565-72), when he mysteriously divided his realm into two parts, one of which was under the direct control of the tsar and his oprichniki (bodyguard). This work argues that the often gruesome forms assumed by the terror reflected not only Ivan’s personal cruelty and sadism, but also his religious views about the divinely ordained right of the tsar to punish his treasonous subjects, just as sinners were punished in Hell. Primarily chronological in its organisation, the book focuses on three main aspects of Ivan’s power: the territorial expansion of the state, the mythology, rituals and symbols of monarchy; and the development of the autocratic system of rule.